.btn{
    display: inline-block;
    padding: 12px 20px;
    line-height: 1;
    border: 1px solid #dcdfe6;
    border-radius: 5px;
    text-align: center;
    font-size: 14px;
    color: #606266;
    cursor: pointer;
    outline: none;
}
.disabled{
    opacity: .6;
    cursor: not-allowed;
}